Ngalo naluphi na uyilo lokuhambisa umbane, uyilo lomzimba we Ibhodi PCB likhonkco lokugqibela. Ukuba indlela yoyilo ayifanelekanga, i-PCB inokukhupha uphazamiseko oluninzi kakhulu lwe-electromagnetic kwaye ibangele unikezelo lwamandla lusebenze lungazinzanga. Oku kulandelayo yimiba efuna ingqwalasela kucazululo lwenyathelo ngalinye:

1. Ukususela kwiskim ukuya kwinkqubo yoyilo lwePCB yokuseka iiparamitha zecandelo-“input principle netlist-“design parameter settings-“manual layout-” manual wiring-“verification design-” review-“CAM output.

Eyesibini, ukusetwa kweparameter Umgama phakathi kweengcingo ezikufutshane kufuneka ukwazi ukuhlangabezana neemfuno zokhuseleko lombane, kwaye ukwenzela ukuba kube lula ukusebenza kunye nokuveliswa, umgama kufuneka ube mkhulu kangangoko kunokwenzeka. Ubuncinci bezithuba kufuneka bufanele ubuncinci bombane onyamezelwayo. Xa ubuninzi be-wiring buphantsi, izithuba zemigca yesignali zinokunyuswa ngokufanelekileyo. Kwimigca yemiqondiso enesithuba esikhulu phakathi kwamanqanaba aphezulu naphantsi, isithuba kufuneka sibe sifutshane kangangoko kwaye isithuba kufuneka sandiswe. Ngokubanzi, Seta isithuba somkhondo sibe yi-8mil. Umgama phakathi komda womngxuma wangaphakathi wepadi kunye nomda webhodi eprintiweyo kufuneka ube mkhulu kune-1mm, enokuphepha iziphene zepadi ngexesha lokucubungula. Xa umkhondo oxhunywe kwiipads zincinci, ukudibanisa phakathi kweepads kunye neetrayisi kufuneka kuqulunqwe kwimilo yokulahla. Inzuzo yale nto kukuba iipads azilula ukukhupha, kodwa umkhondo kunye neepads azinqanyulwa ngokulula.

Okwesithathu, i-component layout practice ibonise ukuba nangona i-circuit schematic design ichanekile, ibhodi yesekethe eprintiweyo ayilwanga ngokufanelekileyo, iya kuba nefuthe elibi ekuthembekeni kwezixhobo zombane. Umzekelo, ukuba iilayini ezimbini ezibhityileyo ezinxuseneyo zebhodi eprintiweyo zisondelelene, umqondiso wamaza wophawu uya kulibaziseka kwaye ingxolo ebonakalisiweyo iya kwenziwa kwi-terminal yomgca wothumelo. Ukusebenza kuyehla, ngoko xa uyila ibhodi yesekethe eprintiweyo, kufuneka ubeke ingqalelo ekuthatheni indlela echanekileyo.

Umbane ngamnye otshintshayo uneziphetho ezine zangoku:

(1) umbane wokutshintsha isekethe ye-AC

(2) i-output rectifier AC circuit

(3) umthombo wesiginali yegalelo langoku loop

(4) Umthwalo wemveliso yangoku iluphu Iluphu yegalelo ihlawulisa i-capacitor yegalelo ngokusebenzisa i-DC yangoku eqikelelweyo. Isihluzi se-capacitor sisebenza ikakhulu njengogcino lwamandla ebroadband; ngokufanayo, i-capacitor yokucoca imveliso ikwasetyenziselwa ukugcina amandla amatyeli aphezulu ukusuka kwisilungisi sokuphuma. Ngexesha elifanayo, amandla e-DC wesiphaluka somthwalo wemveliso apheliswa. Ngoko ke, ii-terminals ze-input and output filter capacitors zibaluleke kakhulu. Iisekethe zangoku zegalelo kunye nemveliso kufuneka zixhunywe kuphela kunikezelo lwamandla ukusuka kwii-terminals ze-filter capacitor ngokulandelanayo; ukuba uxhulumaniso phakathi kwe-input / output circuit kunye ne-power switch / rectifier circuit ayinakuxhunywa kwi-capacitor I-terminal ixhunyiwe ngokuthe ngqo, kwaye amandla e-AC aya kuhanjiswa kwindalo ngegalelo okanye i-capacitor filter capacitor. Isiphaluka se-AC sokutshintsha kwamandla kunye nesekethe ye-AC ye-rectifier iqulethe i-high-amplitude trapezoidal currents. Amacandelo e-harmonic ale misinga aphezulu kakhulu. I-frequency inkulu kakhulu kunesiqhelo esisisiseko sokutshintsha. Incopho ye-amplitude ingaba phezulu ngokuphindwe ka-5 i-amplitude yegalelo eliqhubekayo / imveliso ye-DC yangoku. Ixesha lenguqu lidla ngokuba malunga nama-50ns. Ezi lophu zimbini zezona ziqhelene kakhulu nokuphazamiseka kwe-electromagnetic, ke ezi loops ze-AC kufuneka zibekwe phambi kweminye imigca eprintiweyo kubonelelo lwamandla. Amacandelo amathathu aphambili kwi-loop nganye yi-filter capacitors, iiswitshi zamandla okanye i-rectifiers, i-inductors okanye i-transformers. Zibeke ecaleni komnye nomnye kwaye ulungelelanise indawo yamacandelo ukwenza indlela yangoku phakathi kwabo ibe mfutshane kangangoko. Eyona ndlela ilungileyo yokuseka ukutshintshwa kwesakhiwo sonikezelo lwamandla kufana noyilo lombane. Eyona nkqubo yoyilo yile ilandelayo:

• Beka i-transformer

• Yila iluphu yangoku yokutshintsha amandla

• Yila imveliso yokubuyisela iluphu yangoku

• Ulawulo lwesekethi eqhagamshelwe kwisekethi yamandla e-AC

• Yila igalelo lomthombo wangoku welophu kunye nesihluzi segalelo Yila iluphu yomthwalo kunye nesihluzo semveliso ngokweyunithi esebenzayo yesekethe.